
An impossible locked-room murder: Captain Mortuga lies dead beside an ancient cauldron aboard the world’s strangest submarine, crewed by sketchy suspects. A handcrafted point-and-click with sharp humour and tricky puzzles. Dive into the next mystery from the creators of Tangle Tower & Crow Country.
Modeled estimate, not a reported figure. How we estimate →
Prices
The United States storefront in every case, so this compares stores and not countries.
Prices
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
Every market we collect.
About
In the pitch-black waters beyond a long-abandoned fishing town, the enigmatic captain of the world's strangest submarine has been murdered. Some say he was an immortal time-traveller. Others say he was a vampire, cursed to stay hidden beneath the waves forever...
Found alone in a locked room, with only an ancient stone cauldron to suggest how he might have died, it's up to Detective Grimoire and Sally to piece together what really happened. Was it a curse, released from the cauldron? One of the submarine's eccentric crew? Or does the bizarre truth run even deeper...
• Every clue is a fully realised 3D object waiting to be examined for hidden secrets
• Grimoire and Sally are back, and joined by a fully voiced cast of mysterious suspects
• A hauntingly beautiful original soundtrack performed by the Budapest Art Orchestra
• Explore every hand-painted inch of The Mortuga Submarine, where not all is as it seems...
*Voice audio is only in English
Genres
Sums Steam only; PlayStation publishes no volume signal, so the true total is higher by an unknown amount.
| Store | Price | Audience | Score | Chart | Est. revenue |
|---|---|---|---|---|---|
SteamYou are here | $19.99 | 2.8Kreviews | 99% | — | $1M |
| $19.99 | 69ratings | 96% | — | not modelled |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Engagement
Reviews
Themes across 1520 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
The Mermaid Mask is an absolutely fantastic game. If the demo or trailers are intriguing to you, do yourself the favor and pick up the full game. I loved playing the predecessor game Tangle Tower so much on Switch, I replayed it on Steam a while later. I did not expect The Mermaid Mask to be significantly different gameplay-wise, but I am happy to report that it is [i]even better.[/i] A few notes: - Incredible character animations, silly writing, and impeccable voice acting - Fun puzzles (some more engaging than others, but overall really enjoyable) - Compared to the 2D clues in Tangle Tower, clues are now 3D and contain more hidden info - Art Gallery with fun developer comments Small critique: It would be nice if this game had a chapter select or rewind type feature once the story is finished. Some achievements are missable once you start the final chapter, and it can take a bit of time replaying the game simply to choose a different dialogue option.
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $1M | 2.7K | 60% | $16.99 | |
| $1M | 584 | 87% | $49.99 | |
| $1M | 1.6K | 87% | $19.99 | |
| $1M | 2.9K | 79% | $9.99 | |
| $1M | 832 | 81% | $44.99 | |
| $1M | 1.1K | 67% | $29.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $1.8M | 6.8K | 95% | $19.99 | |
| $607.9K | 1.8K | 92% | $14.44 | |
| $83.2K | 291 | 87% | $15.99 | |
| $37.1K | 256 | 89% | $9.99 | |
| $13.2K | 109 | 95% | $8.99 | |
| $3.7K | 15 | 67% | $14.99 |
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Spanish - Latin America, Traditional Chinese*languages with full audio support
Hours played at review time, across 1.5K reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
This is why I love the 'Detective' games. Unique memorable characters, a good mystery with plenty of twists and foreshadowing, a delightly artsyle supported by an equally delightful soundtrack. It was a long wait for this game, but I look forward to seeing where this goes next!
2 hours in. wonderful game building off tangle tower, seems to have a similar paranormal touch to it. Great art, writing, voice acting, everything.
apaixonado meu deus queremos o proximo
As with all the Detective Grimoire games, this was delightfully fun! The characters are all compelling and entertaining, the art is fantastic and so lively, and the story really gripped me from the beginning. And the voice acting was fantastic! I can only hope for more Grimoire and Sally in the future! Thanks so much to the devs and everyone involved with this game!
Good game. Great Story. I was hooked ( oh, hey: an accidental nautical pun! ) for, what Steam recorded to be, roughly 15 hours of playtime. Not counting, one daily-life-enforced break between chapters 2 and 3: The near-sleepless night and following workday, which were both intermixed with pondering mysteries and yearning to continue play. I love each and every character. Their design, their personalities, their relationships. Even those I expected to have annoying quirks, because... well the quirks turned out not to be annoying. And again the story had me guessing back and forth of whodunit? No obvious bad guy/girl... even when thinking about each characters tropes. The "minigame" puzzle design is creative, self-explanatory and at the same time tricky. Just the right amount. The "clue presentation" puzzles had me stumped from time to time. Which I consider a good thing, as I had not noticed some details. I guess, I was playing too hastily. I recommend taking pen and paper notes. Small reminders on which clues are connected and what is left open to investigate. As for performance, there was some slowmotion with few 3D objects. And character portraits sometimes loading what I assume to be the default/idle position for a frame or two before playing the animation. Both of which I wasn't bothered by and chuck up to Steam's Proton having to translate Unity to linux running my ancient hardware. For reference, I played on the patch from Sun, July 19, 2026 @2:40 AM CEST. ... though should this be read by a developer: May I plead for a native linux platform release of this and/or future games? ... *cough* previous titles also *cough* ... Finally I am both happy and ashamed that I have forgotten most of the earlier two games stories in the Detective Grimoire series. Ashamed for forgetting at all; Happy, because I can reexperience them with a fresh mind, which this entry makes me want to do immediately. ( If it wasn't past midnight, I most likely would have instead of writing this. ) So, expect glowing reviews for those games soon. Ha, ha.
I read so quickly that unskippable dialogue fills me with rage. The voice acting in this game - no, this series - is so good I didn't want to skip anything. Can't wait for the next one!
I loved Tangle Tower, and this game improved on the mechanics in almost every way. I particularly liked the ability to rotate objects in your inventory and automatically track information you gathered about them. The voice acting and story were also just as strong as the first game. An incredible series overall.
Estos juegos son buenísimos, recomiendo si te gustan los puzzles y buenas historias. Cada personaje es único y genial. Se nota que lo hicieron con mucho amor. <3
Everything that was amazing about Tangle Tower has been transferred over to Mermaid Mask and improved upon 10 fold! A++ game! Loved every minute! Gathering the clues and listening to the characters to puzzle out the murder was very satisfying. I think there were about two puzzles that I got super stumped on, but nothing to make me incredibly frustrated. Just sometimes wished they would let me know what piece I had right. Otherwise, A beautiful and fun murder mystery. I am making my friends play this >:)
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